Naofumi (栃木直文) Tochigi
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Born : 1976
Cat. M50 Ultrarunner since 2013
15
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
33
DUV-index+ ?Largest integer N such that the race distances provide at least N complete segments of N km in total. A single long race may therefore contribute several segments. See the DUV-Index tab for the detailed calculation. calculation details
1
Countries visited ?Japan
Japan49,8%
Rank quotient ?This runner's calculation uses 15 eligible race(s): Σ(rank − 1) = 2 496; Σ finishers = 5 012. 2 496 / 5 012 × 100 = 49.80%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed15
Km — ultra races1 259 km
> 100 km2
Longest race102,0 km
5th Okuizumo Ultra Orochi 100km Tooashi — 13/4/2019
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road100,0%
Records
HISTORY
15 race(s)| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 13/4/2019 | 5th Okuizumo Ultra Orochi 100km Tooashi | 102,00 | ×3 |
| ✓ 2 | 16/4/2016 | 2nd Okuizumo Ultra Orochi 100km Tooashi | 102,00 | ×3 |
| ✓ 3 | 8/12/2019 | 2nd Tobishima Ultra Marathon | 100,00 | ×3 |
| ✓ 4 | 19/10/2019 | 4th Iki 100 km Ultra Marathon | 100,00 | ×3 |
| ✓ 5 | 22/9/2019 | 29. Akita Nairiku 100km Marathon | 100,00 | ×3 |
| ✓ 6 | 16/6/2019 | 14. Okinoshima 100km Ultra Marathon | 100,00 | ×3 |
| ✓ 7 | 12/5/2019 | 26th Ebisu-Daikoku 100 km Marathon | 100,00 | ×3 |
| ✓ 8 | 15/3/2015 | 1st Nagoura Marathon 100 km | 100,00 | ×3 |
| ✓ 9 | 7/9/2019 | 3rd Miyagi Yumeguri Ultra Marathon - 95 km | 95,00 | ×2 |
| ✓ 10 | 14/4/2018 | 13th Toda Saiko 70 km | 70,00 | ×2 |
| ✓ 11 | 3/10/2021 | 8th Naeba-Sanroku Geopark Tsunan Ultramarathon 64K | 64,00 | ×1 |
| ✓ 12 | 29/9/2019 | 6th Naeba-Sanroku Geopark Tsunan Ultramarathon 64K | 64,00 | ×1 |
| ✓ 13 | 19/5/2019 | 7th Tokyo Shibamata 60 km | 60,00 | ×1 |
| ✓ 14 | 8/9/2013 | 64. Tsurunuma 52 km | 52,00 | ×1 |
| ✓ 15 | 23/9/2018 | 28. Akita Nairiku 50km Marathon | 50,00 | ×1 |